A pilot plant study was conducted to evaluate the effect of up to SO vol% l
ight cycle oil (LCO) on product quality when it is used together with strai
ght run gas oil (SRGO) as a hydrotreating feedstock. Experiments were carri
ed out at reaction pressures of 54, 70 and 90 kg/cm(2); reaction temperatur
es of 350, 360, 370 and 380 degrees C, liquid hourly space velocity (LHSV)
of 1.0, 1.5 and 2.0 h(-1), and constant hydrogen-to-oil ratio of 2000 ft(3)
/bbl, over a commercial Co-Mo/gamma-Al2O3 catalyst. The experimental result
s were used to determine apparent reaction orders and activation energies,
which agree with those reported in the literature. (C) 1999 Elsevier Scienc
e B.V. All rights reserved.